// "version" sub-command: display version information

// SPDX-License-Identifier: GPL-3.0-or-later
// Copyright (C) 2021-2025  Simon Ruderich

package main

import (
	"fmt"
	"log"
	"runtime/debug"
)

func MainVersion() error {
	info, ok := debug.ReadBuildInfo()
	if !ok {
		log.Fatal("ReadBuildInfo failed")
	}

	var vcsRev, vcsDirty, vcsTime, goos, goarch string
	for _, x := range info.Settings {
		switch x.Key {
		case "vcs.revision":
			vcsRev = x.Value[:7]
		case "vcs.modified":
			if x.Value == "true" {
				vcsDirty = "-dirty"
			}
		case "vcs.time":
			vcsTime = x.Value[:10] // "2006-01-02"
		case "GOOS":
			goos = x.Value
		case "GOARCH":
			goarch = x.Value
		}
	}

	fmt.Printf("safcm %s%s %s, compiled with %s %s/%s\n",
		vcsRev, vcsDirty, vcsTime,
		info.GoVersion, goos, goarch)
	return nil
}

// vi: set noet ts=4 sw=4 sts=4: